Calcium-45
[化] 放射性钙; 钙45
🧩 词语组成解析
forty-five; [电影]魔鬼交锋.45
🗣️ 情景例句
What time is it?
什么时间啦？
Last year I studied sociology and political science in school.
去年，我在学校攻读了社会学和政治学课程。
Some of us do not know much about the theatre.
我们中有些人还不太懂戏剧。